Multiple choice Y spots in the interphase nuclei give indications of the number of _____________. Autosome Sex chromosomes X chromosomes Y chromosomes Allosomes Reveal answer Fill a bubble to check yourself D Correct answer Explanation Y chromosome is (in humans and other mammals) a sex chromosome, which is normally present only in male cells, which are designated as XY. Y spots in the interphase nuclei give indications of the number of Y chromosomes.